Generic Extraction (views)

HI
I am involved in a project where there are 35 ztables now i am told to use use views as much as possible and extract the data. does any has any step by step doc to create views and what are the conditions on which i can join the tables.
appreciate any kind of help regarding the issue
k.mohan

try this:
/people/sap.user72/blog/2005/09/05/sap-bw-and-business-content-datasources-in-pursuit-of-the-origins
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/84bf4d68-0601-0010-13b5-b062adbb3e33
also check this:
http://help.sap.com/saphelp_nw04/helpdata/en/3f/548c9ec754ee4d90188a4f108e0121/content.htm
assign points if useful ***
Thanks,
Raj

Similar Messages

When we go for Views and Function Modules for Generic Extraction

Hi Experts,
Can you please explain when we go for extracting the data using Views and when we got using Function Modules using Generic Extraction from R/3 system to BW with examples. And also can you explain when we go for delta for the above both scenarios.
Thanks for you help in advance
Rohith

Hi,
Scenario for Extarction using FM
Imagine the scenario where you need to extract data from
tables having no common field between them and thereby preventing you from creating a view on top of those tables..
Or simply consider tables that are highly unrelatd in terms of fields, but you have a requiremnt to extract data from them.
Also Refer.
create generic extractor based on 2 tables
Generic Extraction via Function Module
/people/siegfried.szameitat/blog/2005/09/29/generic-extraction-via-function-module
Steps.
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/a0f46157-e1c4-2910-27aa-e3f4a9c8df33
http://help.sap.com/saphelp_nw04/helpdata/en/86/1c8c3e94243446e10000000a114084/frameset.htm
Scenario for Extraction using View
If there are more number of tables and data in those tables can be represented using joins then we can use this type of extraction
For more info Refer these links
http://help.sap.com/saphelp_nw2004s/helpdata/en/cf/21ecf9446011d189700000e8322d00/frameset.htm
Difference between "Help View" and "Search Help"
http://help.sap.com/saphelp_nw04/helpdata/en/cf/21ed06446011d189700000e8322d00/frameset.htm
for more detailed info look on:
http://www.sap-img.com/abap/what-is-the-different-types-and-usage-of-views.htm
https://www.sdn.sap.com/irj/sdn/wiki?path=/display/home/abap+dictionary&
For GEneric Delta refer these links
[generic with delta;
[https://forums.sdn.sap.com/click.jspa?searchID=11388803&messageID=5164737]

Generic extraction (table,view,functionmodule)

hi
In generic Extaction when we use table and view and function module and sap qu (scenario)
AND
plz send some examples
Please search the forums before posting

Hi,
when Standard Extractors are not supporting to your requirement then we go with Generic Extraction.
Here we have Three different types to design generic extractors
Table
View
Function Module
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/a0f46157-e1c4-2910-27aa-e3f4a9c8df33
https://websmp103.sap-ag.de/~sapidb/011000358700007535452002
Hope this will help you.
Thanks
Prasad

Any docs regarding Table/View,Function Module for Generic Extraction

Hello All
I need to do Generic Extraction,for that if anyone has docs., I need docs on how to create table,view,Function module and infoset query ,on that pl forward to my id
[email protected]
Many Thanks
balaji

hi Amit
Thanks for your docs,but this docs i have already,do u have any thing different one,if so please forward?
Facing a Problem
Iam trying to create view(database view)for vbak and vbap and given in Tables in Table/Join Conditions tab and clicked in Relationship and the relantionship has been generated automatically,now when i tried to activate this view its saying like "No tables and/or fields are defined for view xxxxx(xxxx-> name of a view)
what will be the problem?pl let me know how to create a view?
And also I need to know the diffference between database view,Manintenance view,Projection view and help view?
Pl let me know on this?
Many Thanks
balaji

When to go for generic extraction using view and infoset query?

Hi,
Can anyone clarify me when we should go for generic extraction using view and when we should go for generic extraction using infoset query....
Also what is the difference between view and infoset?
I tried but could not find out....
Regards,
Kalyani.

Hi Kalyani,
We normally go for View or infoset when the data to be fetched in BW is distributed in different tables in SAP R/3.
Had the data been available in one table we can easily build our datasource on that table but if there are more tables then its not possible to do it without Views or Infosets. You can use Function Modules to build your datasource in case it involves complex logic to figure out the data from various tables.
Depending upon the table relationships we create view and include various fields from these tables in that view. Same is with the Infosets, you can have more flexible options like Outer Join, left outer Join etc.
Regards,
Pratap Sone

Generic extraction using function module and view

hi every one ,
iam new to bw and can anyone plz tell me how to extract the data from R/3 to bw using generic extractor by creating function module and a view
thank u,
kishore

Hi Kishore,
Check this blog:
/people/siegfried.szameitat/blog/2005/09/29/generic-extraction-via-function-module
Also Check this doc:
http://help.sap.com/saphelp_nw04/helpdata/en/3f/548c9ec754ee4d90188a4f108e0121/frameset.htm
Generic Extractors
Generic data sources
Generic DS
Bye
Dinesh

Give me details about differrent views in generic extraction give details

give me details about differrent views in generic extraction give details such as database view, projection view, help view, etc please give detail

Dear Deba,
Projection view - Just retrieves some fields from a single table.
Help View - This is used for search help.
Database View - This is inner join view of one or more tables
Maintenance View - Helps in creating maintaining data of the application object. The data can be distributed among several tables
Data Base View:
A database view is defined in the ABAP Dictionary and automatically created on the database during
activation. Accesses to a database view are passed directly to the database from the database interface.
The database software performs the data selection.
If the definition of a database view is changed in the ABAP Dictionary, the view created on the database
must be adjusted to this change. Since a view does not contain any data, this adjustment is made by
deleting the old view definition and creating the view again in the ABAP Dictionary with its new definition.
The maintenance status defines whether you can only read with the view or whether you can also write
with it. If a database view was defined with more than one table, this view must be read only.
The data read with a database view can be buffered. View data is buffered analogously to tables. The
technical settings of a database view control whether the view data may be buffered and how this should
be done. The same settings (buffering types) can be used here as for table buffering. The buffered view
data is invalidated when the data in one of the base tables of the view changes.
Maintainance View:
Data that is distributed on more than one table often forms a logical unit, called an application object.
You should be able to display, change and create the data of such an application object together. Users
usually are not interested in the technical implementation of the application object, such as the distribution of the data on several tables.
You can maintain complex application objects in a simple way using a maintenance view. The data is
automatically distributed on the underlying database tables.
All the tables used in a maintenance view must be linked with a foreign key. This means that the join
conditions are always derived from the foreign key in the maintenance view. You cannot enter the join
conditions directly as in a database view.
A maintenance interface with which the data of the view can be displayed, changed and created must be
generated from the definition of a maintenance view in the ABAP Dictionary.
When the maintenance interface is created, function modules that distribute the data maintained with the
view on the underlying tables are automatically generated.
The maintenance interface is generated with the Transaction Generate Table View (Transaction SE54)
or from the view maintenance screen with Environment -> Tab.maint.generator.
Database views implement an inner join. You only get those records which have an entry in all the tables
included in the view.
Maintenance views implement an outer join.
Help View:
A help view is defined analogously to a maintenance view. Help views can only be used as selection
methods in search helps. Since the R/3 System cannot pass the selection directly to the database using
a help view, it must generate its own access routines. The database view should therefore be used as
selection method in preference to the help view.
http://help.sap.com/saphelp_nw2004s/helpdata/en/cf/21ecf9446011d189700000e8322d00/frameset.htm
Difference between "Help View" and "Search Help"
http://help.sap.com/saphelp_nw04/helpdata/en/cf/21ed06446011d189700000e8322d00/frameset.htm
for more detailed info look on:
http://www.sap-img.com/abap/what-is-the-different-types-and-usage-of-views.htm
https://www.sdn.sap.com/irj/sdn/wiki?path=/display/home/abap+dictionary&
Regards,
Ram.

What is the disadvantage with views in generic extraction?

hi
what is the disadvantage with views in generic extraction?
thanks in advance,
srinivas.

Hi ,
What is disadvantage of generic extraction ? 
If i am asking this what you will say ......You have only less points to say if any one ask you like this .
Similarly Generic extraction based on view has many advantegs It was given to extrct data when standard business content data source is not available .
But we know Views can be created when the table you need to extract data has Primary Foreign key relation .So if you need to extarct data from many tables with no relation between them then you cannot use view .
But if you need to extract data from tables that have complex relation ,Then you need to go for Function Module extration and write some ABAP code and using SQL ststements you fetch data from tables based on thier key fields and finally get the desired data by your coding logic .

Generic extraction

Hi,
in generic extraction in which scenarios you extract data from table,view,infoset query,FM
sridhar

Transparent Table
If you're wishing to create a generic DataSource based on a single Transparent Table in the source R3/ECC system, then using that table as the source for your generic DataSource would be appropriate because it will expose all of the columns in that table to your generic extraction structure. There is one exception to this and that is, if you have more than one date field (e.g. Created On and Changed On dates) that you're going to use for generic delta. Pool/Cluster tables and structures wouldn't be allowable for this type of generic DataSource setup.
View on Transparent Tables
If your requirement is to create a generic DataSource based on multiple Transparent Tables in your source R3/ECC system, then a view would be appropriate. You can either use SAP delivered views in the source R3/ECC environment or create a custom view. The same exceptions (generic delta on more than one date field, pool/cluster tables and structures).
Function Module
A custom Function Module can be coded for the extraction of data for a generic DataSource. This type would be appropiate if you're extracting data from pool/cluster tables or structures. Another use for a Function Module as the source for a generic DataSource would be if you're going to use more than one data field for a generic delta. Finally, a Function Module would be used if there is some transformational-type logic required to be done on the extracted data before it is passed to BW.
InfoSet Query
An InfoSet (not to be confused with an InfoSet in BW) query in a source R3/ECC environment, is created in tocde SQ01, and is a way of creating "quick-and-dirty" reports with summarized values, derived values, et. al. This can be used as the basis for a DataSource, if the queries are already built. If not, then a Function Module can perform and necessary aggregations, derivations or other transformational-type logic, instead of creating a query. I say this because I'd highly discourage using this as a source for a generic DataSource because InfoSet queries are usually extremely inefficient and can consume a lot of the valuable system resources.

Generic Extraction (or) How to use table in R/3 system as datasource in BW?

Hi all,
Hope all are having a great day
Can any1 tell me the steps, for Generic Extraction.
It will be very helpful, if the steps are as much as simpler as posible.
I know to create a simple cube in BW.
I have this much knowledge, depending on this can any1 tell me the steps for Generic Extraction from R/3.
examples wud be vry useful
Regards,
Sourav

hi,
Maintaining Generic DataSources
Use
Independently of application, you can create and maintain generic DataSources for transaction data, master data attributes or texts from any kinds of transparent tables, database views, InfoSets of the SAP query or using a function module. As a result, you can make use of the generic extraction of data.
Procedure
Creating a Generic DataSource(RSO2)
       1.      Select the DataSource type and give it a technical name.
       2.      Choose Create.
The creating a generic DataSource screen appears.
       3.      Choose an application component to which the DataSource is to be assigned.
       4.      Enter the descriptive texts. You can choose any text.
       5.      Choose from which datasets the generic DataSource is to be filled.
                            a.      Choose Extraction from View, if you want to extract data from a transparent table or a database view. Enter the name of the table or the database view.
After generation, you get a DataSource whose extract structure is congruent with the database view or the transparent table view.
For more information about creating and maintaining database views and tables, see the ABAP Dictionary Documentation.
                            b.      Choose Extraction from Query, if you want to use a SAP query InfoSet as the data source. Select the required InfoSet from the InfoSet catalog.
Notes on Extraction Using SAP Query
After generation, you now have a DataSource whose extract structure matches the InfoSet.
For more information about maintaining the InfoSet, see the System Administration documentation.
                            c.      Choose Extraction using FM, if you want to extract data using a function module. Enter the function module and extract structure.
The data must be transferred by the function module in an interface table E_T_DATA.
Interface Description and Extraction Process Flow
For information about the function library, see the ABAP Workbench: Tools documentation.
                            d.      With texts, you also have the option of extraction from domain fixed values.
       6.      Maintain the settings for delta transfer where appropriate.
       7.      Choose Save.
When extracting, look at SAP Query: Assigning to a User Group.
Note when extracting from a transparent table or view:
If the extract structure contains a key figure field, that references to a unit of measure or currency unit field, this unit field must appear in the same extract structure as the key figure field.
A screen appears in which you can edit the fields of the extract structure.
       8.      Editing the DataSource:
        Selection
When scheduling a data request in the BW Scheduler, you can enter the selection criteria for the data transfer. For example, you may want to determine that data requests are only to apply to data from the previous month.
If you set the Selection indicator for a field within the extract structure, the data for this field is transferred in correspondence with the selection criteria in the scheduler.
        Hide field
You should set this indicator to exclude an extract structure field from the data transfer. As a result of your action, the field is no longer made available in BW when setting the transfer rules and generating the transfer structure.
        Inversion
Reverse postings are possible for customer-defined key figures. For this reason, inversion is only possible for certain transaction data DataSources. These include DataSources that have a field that is indicated as an inversion field, for example, the field update mode in the DataSource 0FI_AP_3. If this field has a value, then the data records are interpreted as reverse records in BW.
Set the Inversion indicator if you want to carry out a reverse posting for a customer-defined field (key figure). The value of the key figure is then transferred in inverted form (multiplied by 1) into BW.
        Field only known in exit
You can enhance data by extending the extract structure for a DataSource using fields in append structures.
The indicator Field only known in Exit is set for fields of an append structure. In other words, by default these fields are not passed onto the extractor from the field list and selection table.
Deselect the indicator Field Only Known in Exit to enable the Service API to pass on the append structure field to the extractor together with the fields of the delivered extract structures in the field list as well as in the selection table.
9. Choose DataSource ® Generate.
The DataSource is now saved in the source system.
Maintaining Generic DataSources
        Change the DataSource
To change a generic DataSource, in the initial screen of DataSource maintenance, enter the name of the DataSource and choose Change.
You can change the assignment of a DataSource to an application component as well as the texts of a DataSource. Double-clicking on the name of the table, view, InfoSet or extract structure takes you to the appropriate maintenance screen. Here you can make changes required to add new fields. You can fully swap transparent tables and database views, but not InfoSets. If you return to the DataSource maintenance and choose Create, the screen for editing a DataSource appears. To save the DataSource in the SAP source system, choose DataSource ® Generate.
If you want to test extraction in the source system independently of a BW system, choose DataSource ® Test Extraction.
        Delta DataSource
In the Change Generic DataSource screen, you can delete any DataSources that are no longer relevant. If you are extracting data from an InfoSet, delete the associated query. If you want to delete a DataSource, this must not be connected to a BW system.
For more information about extracting using SAP Query, see Extraction using the SAP Query.
hope this helps.
assign point if so
partha

Generic Extraction Delta Loads

Hi Experts,
I am facing problem is I want to extract the data in Generic Extraction in View, Suppose my requirement is I want to delta loads every 1 hour per day, how can i do, Generic Extraction possible are not delta records.
Note:- LO Extraction is possible like we have update mode we can scheduled hours in everyday, But Generice Extraction possible are not.
Please provide me solutions ASAP.
Thanks in Advance......
Regards,
Bharathi.

There are various delta method
1.calday.
2.time stamp.
3.Numeric pointer.
For youe requirement Time stamp will work.
Please check weather you have any field related to time.
Thanks,
Saveen kumar

Deltas in generic extraction

how can we set delta updates in generic extraction?can any one help in this

Hi Praveen,
Please do check the link for step by step for generic extraction
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/84bf4d68-0601-0010-13b5-b062adbb3e33
check the following
http://help.sap.com/bp_biv235/BI_EN/html/bw.htm
business content
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/biw/g-i/how%20to%20co-pa%20extraction%203.0x
https://websmp203.sap-ag.de/co
http://help.sap.com/saphelp_nw04/helpdata/en/37/5fb13cd0500255e10000000a114084/frameset.htm
(navigate with expand left nodes)
Check these links:
/people/sap.user72/blog/2004/12/16/logistic-cockpit-delta-mechanism--episode-one-v3-update-the-145serializer146
/people/sap.user72/blog/2004/12/23/logistic-cockpit-delta-mechanism--episode-two-v3-update-when-some-problems-can-occur
/people/sap.user72/blog/2005/01/19/logistic-cockpit-delta-mechanism--episode-three-the-new-update-methods
/people/sap.user72/blog/2005/02/14/logistic-cockpit--when-you-need-more--first-option-enhance-it
/people/sap.user72/blog/2005/04/19/logistic-cockpit-a-new-deal-overshadowed-by-the-old-fashioned-lis
For Generic:
>Go to Tcode : RSO2,
>There give the name of data source which you want to create like transaction data source or master data attribue or Text data source.
>enter
>again in the next screen you need to give application like SD or MM etc
>in the same screen need to select table/view or infosetquery or function module. these are different ways of creating data sources.
>Give the name for the same like if u r creating data source on table give the name of table.
>click on Generic delta which will there in application tool bar and fill the required columns in that screen like type of delta and all
>continue and save
>it will give all the fieds
>enable the check boxes based on your requirement like selection or hide or field only..
>save
Hope This Helps.
Regards,
Ravikanth

Generic Extraction-example

hello EXPERTS
I am trying to give one presentation about 'Generic Extraction using View'...I know how to explain the process.But as I donot have project experience,I have never worked with Generic Extraction.
Can any one give an example where they used generic extraction(by view) on SAP standard tables.Its enough if you can mention the fields you used and from which tables you took these fields?
Thanks
S

Hi,
Processing steps for creating the Generic Datasource by useing View:
1.Goto RSo2.
Datasource can be created for
a). Transaction Data
b). Master data Attributes
c). Master data Text
2.Specify Application component(SD/MM..)
3.There are three extraction methods to fill datasource.
    i).Transparent table or Database view
    ii).InfoSets of the SAP query
    iii).Using a Function Module
4.Select extraction method extracts the data from a transparent table or database view.
5.select Extraction from View, then we have to create the View.
   a).specify the view name.
   b).choose the view type (Database view) from bellow mentioned views.
      Database view.
      projection view.
      maintainance view.
      help view.
6. Specify Tables and Join Conditions and define view fields.
7. Assign View to Datasource
8. Once you specify view in Data source, the extract structure willgenerate.
9. then select the filds in selection column.
10. Specify Delta-Specific Field and type.
11. Specify Safety Interval and Delta Type and select Save button.
12. Testing the Generic extraction.
Select Datasource option from menu bar-->select Test Extraction or you can check in RSA3.
Regards,
Suman.

Generic extraction loading and performances issues

hi,
any one can give the details about the generic extraction loading as well as performance issues.
advance thanks
regards
praveen

Hi,
when there is no suitable business content datasource we go for creating generic data source.
by using generic data source we can extract data present in single or multiple tables.
If the data is present in the single table we go for generic data source extracting from table.
If the data that is to be extracted is present in multiple tables and the relation between the tables is one to one and if there is a common field in both the tables we create a view on these tables and create a generic data source extracting from view.
if you want to extract data from different tables and there is no common field we create a info set on these tables and create a generic datasource extracting from query.
if you want to extarc the data from different tables and the relation is one to many or many to many we create a generic data source from function module.
If we extarct from function module ,at run time it has to execute the code and brings the data to BW.so it degrades the loading performance.
regards,

Customer and Generic extraction difference ?

Hi ya,
Could any body tell me the difference between the customer and Generic extractions.what are the extraction steps?
Regards.
H

Hi,
In Generic extraction we have to fetch the data from table/view/funtion module.T.code RSO2.
Replicate the data source in bw and send into data target through ods(recommandable).
In customized extraction sap provided LIS,LO-COCKPIT,CO-PA,FI-SL etc,in these sap provides extract stuructures.From the extract structures we have to fetch the data and replicate the data into bw and push into the data targets.
with regards,
HARI GUPTA

Generic Extraction (views)

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